(PHP ActiveX) X509Certificate GetCertHash SHA256

See more Certificates Examples

Shows how to get the SHA256 hash of a certificate.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Cert')
$cert = new COM("Chilkat.Cert");

// Load a certificate object with a certificate.
// The certificate object could have come from any source,
// or perhaps was obtained from another Chilkat function.
// The source does not matter.  What matters is that we have
// a cert object loaded with the certificate..
$success = $cert->LoadFromFile('qa_data/certs/cert_test123.cer');
if ($success != 1) {
    print $cert->LastErrorText . "\n";
    exit;
}

// Get the binary DER of the certificae, and compute the SHA256 hash:
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.BinData')
$bdDer = new COM("Chilkat.BinData");
$cert->ExportCertDerBd($bdDer);

// Get the base64 representation of the SHA256 hash.
$certHash = $bdDer->getHash('sha256','base64');

print 'Certificate hash in base64 = ' . $certHash . "\n";

?>